Mark Lien, industry relations manager for the IES, recorded an audio version of his free-verse column written for the May 2021 issue of LD+A. Titled “Beyond Sunset,” the poem traces the trajectory of lighting history from the origins of electricity to modern day.

We recorded a special Forces of Change video interview in March 2020 to provide a report on the impact of COVID-19 on lighting professionals from the vantage point of some prominent individuals representing various roles within our industry. Now in November 2020, eight months after the initital discussion, we're revisiting the impact of COVID-19 on Lighting Professionals.

We have recorded a special Forces of Change video interview to provide a report on the impact of COVID-19 on lighting professionals, during these difficult times, from the vantage point of some prominent individuals representing various roles within our industry. Hear from Diane Borys (Noctiluca Lighting Design and Consulting), Megan Carroll (New York Digital), Erik Ennen (MNCEE), Bob Preston (Capital Electric Supply), Randy Reid (Edison Report), and moderator Mark Lien (Illuminating...

Harold (Hal) Wallace, the Curator of the Electricity Collection at the Smithsonian Institution’s National Museum of American History sits down with host Mark Lien for a fascinating conversation about the history of electric lighting on another edition of Forces of Change.

Dr. Karma Sawyer of the DOE is Mark Lien’s guest and they discuss where the DOE is heading in 2020 and beyond specifically with regards to lighting.

Mark Lien sits down with Dr. Robert Karlicek of LESA at RPI to discuss how Intelligent Lighting Systems can transform how people live and work.

Probably no one in North America is more responsible for energy-saving dollars in lighting than James Brodrick over the last two decades. Jim reflects with Mark Lien on his work at the DOE and what he planning to do now and into the future.

The inventor and Noble Prize winner Shuji Nakamura discusses his invention of blue pump yellow phosphor white light LEDs and what he sees going forward.

Eunice Noell-Waggoner sits down with Terry McGowan and discusses her career signature research and crusade for more empathy in lighting design for seniors and those with low vision.

The purpose of this article is to evaluate from a biological standpoint the rationale for the establishment of a Circadian Lighting standard put forward by UL under the direction of Dr. Mark Rea of the Lighting Research Center at Rensselaer Polytechnic Institute.

Whether you call it “circadian lighting,” “biologically effective lighting,” or some other name, the principle is the same: the color and intensity of light can be used to regulate the timing of our biological clocks, or “circadian rhythms.” For architects and lighting designers, this is an opportunity to provide healthy and comfortable environments for building occupants.

Mark Lein chats with IES Past President and editor of the Edison Report Randy Reid about the 20th Anniversary of the Edison Report, the importance of integrity in reporting, the invasion of the IT conglomerates into the lighting industry as well as some of the new lighting technologies that he finds fascinating.

Host Mark Lien and Dr. Pocock discuss using LEDs (irradiance, spectral composition, timing, duration) to program photochemical, photosynthetic, development and biochemical processes in plants and the development of a physiological biofeedback system to maintain or change LED physiological programs. In layman’s term growing to produce better, stronger, faster.

As if our lighting community needs more disruption, we are poised for a radical change in how we make, distribute and sell our products. We have experienced two digital revolutions already in communication and computation.

Sam Berman recounts his path into lighting research, recent changes of the energy codes and the science of lighting.

Jan Moyer literally wrote the book on Landscape Lighting. She sits down with host Dan Blitzer and expounds on her career path and what she is up to presently.

Howard Brandston regales us with his discussion of how he got his start in lighting, his career with the IES and his approach to lighting design and education.

Rita Harrold became the first woman President of the IES in 1985, seventy-nine years after the IES was established. Rita discusses her trailblazing career which includes a long turn as the IES Director of Knowledge.

Mark Rea discusses the state of lighting education today, the need for revised discussion on lighting metrics, levels and need for action now.

Christopher “Kit” Cuttle delivers a compelling paradigm shift on how lighting is measured as well as reminisces about his career, thus far.

David DiLaura offers a captivating reflection on his career in lighting including the changes in teaching requirements and expectations and his extensive work to develop the 10th Edition Lighting Handbook.

Douglas Steel, Ph.D. is a Translational Scientist with NeuroSense, a medical technology consultancy developing novel phototherapies for treating a number of nervous system conditions including PTSD, sensory processing disorders, migraine headache, depression, and emotional and stress-related conditions.

Numerous medical studies have shown that exposure to blue light at night suppresses the production of melatonin by the pineal gland in our brains and so disrupts our circadian rhythms. As a result, we may have difficulty sleeping. It is therefore only common sense that we should specify warm white (3000 K) light sources wherever possible, especially for street lighting. True or false?

With his co-founder and co-host Michael Colligan, Greg Ehrich started the Get a Grip Podcast in February 2017. Recognizing that there is a need in the lighting industry for a forum for people to get together and discuss many interesting subjects and issues, Get A Grip was born.